зеркало из https://github.com/mozilla/gecko-dev.git
235 строки
8.3 KiB
C
235 строки
8.3 KiB
C
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
|
|
/*
|
|
* The contents of this file are subject to the Netscape Public License
|
|
* Version 1.0 (the "NPL"); you may not use this file except in
|
|
* compliance with the NPL. You may obtain a copy of the NPL at
|
|
* http://www.mozilla.org/NPL/
|
|
*
|
|
* Software distributed under the NPL is distributed on an "AS IS" basis,
|
|
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
|
|
* for the specific language governing rights and limitations under the
|
|
* NPL.
|
|
*
|
|
* The Initial Developer of this code under the NPL is Netscape
|
|
* Communications Corporation. Portions created by Netscape are
|
|
* Copyright (C) 1998 Netscape Communications Corporation. All Rights
|
|
* Reserved.
|
|
*/
|
|
|
|
#ifndef nspr_pth_defs_h_
|
|
#define nspr_pth_defs_h_
|
|
|
|
/*
|
|
** Appropriate definitions of entry points not used in a pthreads world
|
|
*/
|
|
#define _PR_MD_BLOCK_CLOCK_INTERRUPTS()
|
|
#define _PR_MD_UNBLOCK_CLOCK_INTERRUPTS()
|
|
#define _PR_MD_DISABLE_CLOCK_INTERRUPTS()
|
|
|
|
/* In good standards fashion, the DCE threads (based on posix-4) are not
|
|
* quite the same as newer posix implementations. These are mostly name
|
|
* changes and small differences, so macros usually do the trick
|
|
*/
|
|
#ifdef _PR_DCETHREADS
|
|
#define PTHREAD_MUTEXATTR_INIT pthread_mutexattr_create
|
|
#define PTHREAD_MUTEXATTR_DESTROY pthread_mutexattr_delete
|
|
#define PTHREAD_MUTEX_INIT(m, a) pthread_mutex_init(&(m), a)
|
|
#define PTHREAD_MUTEX_IS_LOCKED(m) (0 == pthread_mutex_trylock(&(m)))
|
|
#define PTHREAD_CONDATTR_INIT pthread_condattr_create
|
|
#define PTHREAD_COND_INIT(m, a) pthread_cond_init(&(m), a)
|
|
#define PTHREAD_CONDATTR_DESTROY pthread_condattr_delete
|
|
|
|
/* Notes about differences between DCE threads and pthreads 10:
|
|
* 1. pthread_mutex_trylock returns 1 when it locks the mutex
|
|
* 0 when it does not. The latest pthreads has a set of errno-like
|
|
* return values.
|
|
* 2. return values from pthread_cond_timedwait are different.
|
|
*
|
|
*
|
|
*
|
|
*/
|
|
#else
|
|
#define PTHREAD_MUTEXATTR_INIT pthread_mutexattr_init
|
|
#define PTHREAD_MUTEXATTR_DESTROY pthread_mutexattr_destroy
|
|
#define PTHREAD_MUTEX_INIT(m, a) pthread_mutex_init(&(m), &(a))
|
|
#define PTHREAD_MUTEX_IS_LOCKED(m) (EBUSY == pthread_mutex_trylock(&(m)))
|
|
#define PTHREAD_CONDATTR_INIT pthread_condattr_init
|
|
#define PTHREAD_CONDATTR_DESTROY pthread_condattr_destroy
|
|
#define PTHREAD_COND_INIT(m, a) pthread_cond_init(&(m), &(a))
|
|
#endif
|
|
|
|
/* The pthread_t handle used to identify a thread can vary in size
|
|
* with different implementations of pthreads. This macro defines
|
|
* a way to get a unique identifier from the handle. This may be
|
|
* more of a problem as we adapt to more pthreads implementations.
|
|
*/
|
|
#if defined(_PR_DCETHREADS)
|
|
#define PTHREAD_ZERO_THR_HANDLE(t) memset(&(t), 0, sizeof(pthread_t))
|
|
#define PTHREAD_THR_HANDLE_IS_ZERO(t) \
|
|
(!memcmp(&(t), &pt_zero_tid, sizeof(pthread_t)))
|
|
#define PTHREAD_COPY_THR_HANDLE(st, dt) (dt) = (st)
|
|
#elif defined(IRIX) || defined(OSF1) || defined(AIX) || defined(SOLARIS) \
|
|
|| defined(HPUX) || defined(LINUX) || defined(FREEBSD) \
|
|
|| defined(NETBSD)
|
|
#define PTHREAD_ZERO_THR_HANDLE(t) (t) = 0
|
|
#define PTHREAD_THR_HANDLE_IS_ZERO(t) (t) == 0
|
|
#define PTHREAD_COPY_THR_HANDLE(st, dt) (dt) = (st)
|
|
#else
|
|
#error "pthreads is not supported for this architecture"
|
|
#endif
|
|
|
|
#if defined(_PR_DCETHREADS)
|
|
#define PTHREAD_ATTR_INIT pthread_attr_create
|
|
#define PTHREAD_ATTR_DESTROY pthread_attr_delete
|
|
#define PTHREAD_CREATE(t, a, f, r) pthread_create(t, a, f, r)
|
|
#define PTHREAD_KEY_CREATE pthread_keycreate
|
|
#define PTHREAD_ATTR_SETSCHEDPOLICY pthread_attr_setsched
|
|
#define PTHREAD_ATTR_GETSTACKSIZE(a, s) \
|
|
(*(s) = pthread_attr_getstacksize(*(a)), 0)
|
|
#define PTHREAD_GETSPECIFIC(k, r) \
|
|
pthread_getspecific((k), (pthread_addr_t *) &(r))
|
|
#elif defined(_PR_PTHREADS)
|
|
#define PTHREAD_ATTR_INIT pthread_attr_init
|
|
#define PTHREAD_ATTR_DESTROY pthread_attr_destroy
|
|
#define PTHREAD_CREATE(t, a, f, r) pthread_create(t, &a, f, r)
|
|
#define PTHREAD_KEY_CREATE pthread_key_create
|
|
#define PTHREAD_ATTR_SETSCHEDPOLICY pthread_attr_setschedpolicy
|
|
#define PTHREAD_ATTR_GETSTACKSIZE(a, s) pthread_attr_getstacksize(a, s)
|
|
#define PTHREAD_GETSPECIFIC(k, r) (r) = pthread_getspecific(k)
|
|
#else
|
|
#error "Cannot determine pthread strategy"
|
|
#endif
|
|
|
|
/*
|
|
* See if we have the privilege to set the scheduling policy and
|
|
* priority of threads. Returns 0 if privilege is available.
|
|
* Returns EPERM otherwise.
|
|
*/
|
|
|
|
#ifdef AIX
|
|
#define PT_PRIVCHECK() privcheck(SET_PROC_RAC)
|
|
#elif defined(HPUX) && !defined(_PR_DCETHREADS)
|
|
PR_EXTERN(PRIntn) pt_hpux_privcheck(void);
|
|
#define PT_PRIVCHECK() pt_hpux_privcheck()
|
|
#else
|
|
#define PT_PRIVCHECK() 0
|
|
#endif /* AIX */
|
|
|
|
#if defined(_PR_DCETHREADS)
|
|
#define PTHREAD_EXPLICIT_SCHED PTHREAD_DEFAULT_SCHED
|
|
#endif
|
|
|
|
/*
|
|
* pthread_mutex_trylock returns different values in DCE threads and
|
|
* pthreads.
|
|
*/
|
|
#if defined(_PR_DCETHREADS)
|
|
#define PT_TRYLOCK_SUCCESS 1
|
|
#define PT_TRYLOCK_BUSY 0
|
|
#else
|
|
#define PT_TRYLOCK_SUCCESS 0
|
|
#define PT_TRYLOCK_BUSY EBUSY
|
|
#endif
|
|
|
|
/*
|
|
* These platforms don't have pthread_atfork()
|
|
*/
|
|
#if defined(_PR_DCETHREADS) || defined(FREEBSD) \
|
|
|| (defined(LINUX) && defined(__alpha)) \
|
|
|| defined(NETBSD)
|
|
#define PT_NO_ATFORK
|
|
#endif
|
|
|
|
/*
|
|
* These platforms don't have sigtimedwait()
|
|
*/
|
|
#if (defined(AIX) && !defined(AIX4_3)) || defined(LINUX) \
|
|
|| defined(FREEBSD) || defined(NETBSD)
|
|
#define PT_NO_SIGTIMEDWAIT
|
|
#endif
|
|
|
|
#if defined(OSF1)
|
|
#define PT_PRIO_MIN PRI_OTHER_MIN
|
|
#define PT_PRIO_MAX PRI_OTHER_MAX
|
|
#elif defined(IRIX)
|
|
#include <sys/sched.h>
|
|
#define PT_PRIO_MIN PX_PRIO_MIN
|
|
#define PT_PRIO_MAX PX_PRIO_MAX
|
|
#elif defined(AIX)
|
|
#include <sys/priv.h>
|
|
#include <sys/sched.h>
|
|
#ifndef PTHREAD_CREATE_JOINABLE
|
|
#define PTHREAD_CREATE_JOINABLE PTHREAD_CREATE_UNDETACHED
|
|
#endif
|
|
#define PT_PRIO_MIN DEFAULT_PRIO
|
|
#define PT_PRIO_MAX DEFAULT_PRIO
|
|
#elif defined(HPUX)
|
|
|
|
#if defined(_PR_DCETHREADS)
|
|
#define PT_PRIO_MIN PRI_OTHER_MIN
|
|
#define PT_PRIO_MAX PRI_OTHER_MAX
|
|
#else /* defined(_PR_DCETHREADS) */
|
|
#include <sys/sched.h>
|
|
#define PT_PRIO_MIN sched_get_priority_min(SCHED_OTHER)
|
|
#define PT_PRIO_MAX sched_get_priority_max(SCHED_OTHER)
|
|
#endif /* defined(_PR_DCETHREADS) */
|
|
|
|
#elif defined(LINUX)
|
|
#define PT_PRIO_MIN sched_get_priority_min(SCHED_OTHER)
|
|
#define PT_PRIO_MAX sched_get_priority_max(SCHED_OTHER)
|
|
#elif defined(SOLARIS)
|
|
/*
|
|
* Solaris doesn't seem to have macros for the min/max priorities.
|
|
* The range of 0-127 is mentioned in the pthread_setschedparam(3T)
|
|
* man pages, and pthread_setschedparam indeed allows 0-127. However,
|
|
* pthread_attr_setschedparam does not allow 0; it allows 1-127.
|
|
*/
|
|
#define PT_PRIO_MIN 1
|
|
#define PT_PRIO_MAX 127
|
|
#elif defined(FREEBSD) || defined(NETBSD) /* XXX */
|
|
#define PT_PRIO_MIN 0
|
|
#define PT_PRIO_MAX 126
|
|
#else
|
|
#error "pthreads is not supported for this architecture"
|
|
#endif
|
|
|
|
/* Needed for garbage collection -- Look at PR_Suspend/PR_Resume implementation */
|
|
#if defined(OSF1)
|
|
#define PTHREAD_YIELD() pthread_yield_np()
|
|
#elif defined(HPUX10_30) || defined(HPUX11)
|
|
#define PTHREAD_YIELD() sched_yield()
|
|
#elif defined(HPUX)
|
|
#define PTHREAD_YIELD() pthread_yield()
|
|
#elif defined(AIX)
|
|
extern int (*_PT_aix_yield_fcn)();
|
|
#define PTHREAD_YIELD() (*_PT_aix_yield_fcn)()
|
|
#elif defined(IRIX)
|
|
#include <time.h>
|
|
#define PTHREAD_YIELD() \
|
|
PR_BEGIN_MACRO \
|
|
struct timespec onemillisec = {0}; \
|
|
onemillisec.tv_nsec = 1000000L; \
|
|
nanosleep(&onemillisec,NULL); \
|
|
PR_END_MACRO
|
|
#elif defined(SOLARIS)
|
|
#define PTHREAD_YIELD() sched_yield()
|
|
#elif defined(LINUX)
|
|
#define PTHREAD_YIELD() sched_yield()
|
|
#elif defined(FREEBSD) || defined(NETBSD)
|
|
#define PTHREAD_YIELD() pthread_yield()
|
|
#else
|
|
#error "Need to define PTHREAD_YIELD for this platform"
|
|
#endif
|
|
|
|
/*
|
|
** And when you really wanted hardcore locking w/o any fluff ...
|
|
**
|
|
** ... and why would you want that????
|
|
*/
|
|
#define _PR_LOCK_LOCK(_lock) pthread_mutex_lock(&_lock->mutex);
|
|
#define _PR_LOCK_UNLOCK(_lock) pthread_mutex_unlock(&_lock->mutex);
|
|
|
|
#define _MD_INIT_LOCKS()
|
|
|
|
#endif /* nspr_pth_defs_h_ */
|